Sometimes barrel scrapings are as much part of the meal as anything else from the barrel. In the brewing industry, that’s how you get sludgy yeast spreads like Marmite. Yum. Or not.

Meanwhile… we’ve met Alex’s Hand before. They’re yomping Seattle-ites from the scruffiest, carney-est end of American Gothic; something like a junior Primus, Zappa and Residents rolled into one, abruptly zombified, and crammed into the fustiest old suit in Abraham Lincoln’s trunk of hand-me-downs. This EP of B-sides (so they call them – they’ve only ever put out one EP) certainly seems like barrel scrapings. It’s mostly tarry, and it sticks to things. It’s shapeless, it’s distinctly umami, and you might not like it.

That, of course, is the point. Alex’s Hand tend to revel in everything they do, both their moments of genuine artistry and their dumbest chunks of musical blubber. ‘This Cat Is A Genius’ is a pre-release teaser of off-cuts from their debut album (‘Albatross Around The Neck’). It shows off (if that’s the right word) their sludgier leanings; their most precipitous rants; their Melvins side. It sounds as if while the goofy fuckers were messing around in rehearsal, some vicious bastard poisoned their coffee – but they enjoyed it so much that they sent out for more and left the tape running.

What the band’s actually doing is dealing with the departure of Slurrp, their ontime lead guitarist and horn-razzler. Drummer Nic Barnes and bass-bothering microphone pest Kellen Mills drop their stage-names, pick up the pieces and tumble onwards; various buddies help Kellen out with the guitar parts; but it’s clearly been a blow. You can all but hear Alex’s Hand bouncing off the ropes. However, they’re not ones to miss out on a dark chortle, even at their own expense. Nor are they scared of turning a setback into a challenge. If they have to have a period of floundering, they’re damn well going to get something out of it, even if they have to milk it ’til it bleeds. Rolling away from a relatively tight rock stance towards something doomier (or at least more rubbery), they’re taking the opportunity to map the underside of their development as they go.

One of the last two tracks from Slurrp’s last stand – ConserveNow! – is six-and-a-half near-atonal minutes of Melvins-style strain: a lurch-along instrumental of fuzzed grunge bass and wobbly guitar, like a sick freight train careening along a lost stretch of railway. The other, Ants, is a collapsing shack-load of wreckage-guitar and free-form word association. While Slurrp sifts through sluggish, raging clumps of feedback in the background, Kellen’s schizophrenic basslines jump and ebb between laid-back mooch and irritated attack. He also mutters beady-eyed, half-cut stuff into your ear – mostly about giants and UFOs, although at one point he does complain “words are stale, empty – they lack a certain sensuality.” Much of the ‘This Cat Is A Genius’ shares this playful pissed-off stance – a complaining laughter; clever-dumb; slumming in drunken despondency and enjoying a grump. Kellen plays the role of educated-and-unravelling to the hilt, offering flashes of self-mockery through the filter of booze vapours and the pinch of bad shoes.

Dear Me’s clench of lumbering punk disgruntlement mingles King Crimson feedback skitters with a collapsing, anti-play perversity. Inside itself, the song’s at war – halfway through, Kellen grabs a guitar and launches doggedly down a different tunnel and into a different tune. On the headache blunder of Train, he’s scouting for empty bars in order to avoid conversation, moping about insincerity like a touchy teenager: “wish I was happy listening to people with nothing to say. / Lying assholes with so much money / really are dead inside – / they pick my brains as they lie.” Longtime ally Ben Reece (of Step Daddy) drops in again to add wracked, protesting electric guitar and some needling ‘Marquee Moon’ edge as Kellen’s drunken soliloquy heads ever further downhill and then kinks back up shit creek, screaming about “blackest diamonds” and falling into the sea.

While the odd glancing zinger falls out of this kind of lyrical mess, Kellen’s verbal squalls and cracked mumbling are generally just another bit of colour. What he says is less important than how he says it; or just how the words hit the wall. Impression (featuring another temporary guitarist, Shadough Williams) sounds like a lobotomized David Byrne tripping over Black Sabbath. Nic drums on bottles while the music flinches between runaway bursts of samba and foot-dragging sludge-metal. Kellen dismisses another waster in smudges of sardonic detail: “he smokes his cigarettes, douses them with side-effects… / Stand to deliver, his parents used to say – / started out rich and pissed it all away.”

On Penticide, the band paddle around in a splatter of sprained, detuned instruments – piano, melodicas, glockenspiels – while Kellen’s rambling narration casts a cockeyed look downtown. Scribbling a vicious political cartoon of a “crack-whore free-market” full of hapless fools pushing “shit-stained zombie shopping carts”, he also rips himself and his peers ragged. “Welcome to the half-baked bistro… / conspiracy countdown coffee-shop collective,” he husks, before tagging himself as “a dying maverick with a bad attitude… / like Merce Cunningham took a shit in a wine glass.” Mocking his trashed, anti-heroic slide from high culture to garbage, the band break into sarcastic applause.

Confounding all this sarcasm, the final moments come close to delicacy. Sad Little Skeletons is slender, thoughtful and melancholy; initially, it’s not much more than distant birdsong and overheard chat, accompanied by lonely bass melody and shavings of rhythm guitar. For once, Kellen sings gently, setting aside the drunken howls and the scatter-shot smartarsery. Clarity renders his conclusions even bleaker. “Thoughts will come / then fly away. / These emotions are so thick, / like this life just makes me sick. / These piddly little humans, driving their cars / on the freeway… / Sad little skeletons; broken, but don’t realize they’re lost.” The rise towards a tangled noisy fanfare and the drowning of the words in yell and distortion initially comes as a relief. Then you go back and listen to it again, hearing the weary breathing and the tiredness that smacks of reality.

Part-broken, smeared, and devilled by little gouts of waspishness, this isn’t the easiest collection of songs and slurs to get along with. But there’s plenty to scoop out anyway, especially if you like hearing the wilful awkwardness of a band who enjoy stretching themselves out of shape and balance, and who can fit that in with the big boots and barfly lunges. If you enjoy feeling as if you’ve been dipped in an uncomfortable goo, that’s a bonus.

All we can see outside in the dark are moving, ghostly fronds – foliage bleached by the passing light spilling from our boat, nodding in the gusting winds above the lap of water. We’re on the river at night. We can’t see where we’re going, and we’ve entrusted our safety to a group of people with the seedy, ingratiating collective name of Earnest Cox. Things look bleak.

He’s greeted by laughter. It’s all far, far too English for any of that: those nodding leaves we’re passing are in quiet Gloucestershire, and the River Severn isn’t winding us towards the heart of darkness… not unless Bristol’s having a really bad Saturday night. The double-decker boat we’re riding – the MV King Arthur – has been hired from the National Waterways Museum, and in under four hours we’ll have looped back to its safe berth in Gloucester. On the way, we’ll be enjoying a self-propelled music bash featuring the aforementioned Coxers and a little circle of related bands from Gloucester and London. There’s even a raffle. Cosy.

Had we set out a little earlier in the summer, and during the day, it would have been picnics and beer all round by now. As the red and gold lights of a jolly riverside pub bob past like a luminous Johnny Walker bottle, it’s clear that any actual weirdness will need to be handled by the bands. Crammed onto chairs on the makeshift band stage wedged into the top deck, Datapuddle do what they can. Alex Vald (who once played filthy guitar for Dream City Film Club) cradles an electric mandolin across his chest like a sulking cat. When not distractedly plucking and strumming at it as if he were plucking a chicken, his hands dart restlessly towards a litter of electronic gizmos on a table: a virtual theremin, a cheap sequencer, a plastic voice-changer and other bits of toy-box guts. Stephen Huddle plays sketchy acoustic guitar and pushes broken murmurs and mumbles of song up into Alex’s cobwebs of sound.

Datapuddle at The Cox Cruise

What ultimately emerges is a lo-fi cat’s-cradle of strung-together and slightly strung-out elements. Tidal dub; debris and dusty notes swept out of an Irish-American bar; bits of memory and reaction scattered like dandruff – all glued by static electricity and misfiring synapse energy to the guitar strings of a long-fried singer-songwriter. “Here’s a little sea shanty,” says Stephen brightly. A water-blip of electronics merges with a Lloyd Cole chug of guitar, rocking it on its rhythmic base. Alex buzzes a harmonica into an overlapping backwards loop, transforming it into a reversed melodica.

On the next song, trip-hop snare-drum smoke merges with psychedelic space whisper like the first skunked-out collision between Portishead and Hawkwind. Alex’s mandolin maintains a relentless, disappearing clang like a freight train bell, while Stephen mutters like Tom Waits ruffled from deep sleep. Peril – another shaggy-dog shanty written especially for tonight – namechecks the Severn amidst its steam-train chunter of knocks, old-school electro breaks, and harmonica rasps. “Don’t buy the brown acid,” Stephen sings, channelling up the confusion of a different party as ours sways cheerfully along the river.

Datapuddle come to a purring end with lashings of electric theremin wibble and a lengthy musical chew on a genuine melodica which has surfaced from their box of battered goodies. Watching them was like watching someone scrabble a shack together out of estuary trash and flotsam. In its way, it was just as raw and triumphant.

Paddy McCarthy & Michael J. Sheehy at The Cox Cruise.

While the upstairs audience return to conversation and shore-spotting, Michael J. Sheehy and Paddy McCarthy are down below decks mopping up the leftovers (along with any beer that’s available). Cuddling a pair of honey-blonde acoustic guitars, the brothers from St Silas Intercession (and, previously, Dream City Film Club) have wedged themselves into a corner to hammer out rough’n’ready London-Irish punk blues as brutal as paving stones and hard-luck sneers. Eventually they’re joined by a wandering harmonica player and by a growing crowd of boozy party stragglers. Before too long, the corner turns into an enthusiastic trash-music shebeen (staggered over the changeover times between the acts upstairs) during which everyone’s treated to rattling, spat-out’n’spattered takes of the songs from the debut St Silas EP, starting with the vicious roar of You Don’t Live Here Anymore.

St Silas Intercession’s music is a London echo of the brutally direct and bluesy garage noise still spilling out of Detroit (and all of the little Detroits that have sprung up in the wake of Jack White or The Dirtbombs). Venomous as a dirty flick-knife and as blunt as masonry nails, it’s some way down the evolutionary tree from the corrupted sophistication of Sheehy’s recent songwriter albums, or even from the trawling sleaze of his old work with Dream City Film Club. Obviously the man himself couldn’t give a shit about all that: judging by the twinkle in his eyes and in Paddy’s, as they face each other off over sprawling riffs and hollers, they’ve rarely been happier with their music than now.

Paddy McCarthy at The Cox Cruise.

The brute-blues meanness of Get My Share has a good hard whiskey sting to it; as does the defiance of Caravan Rock (“me and my kids and their mum, / living in a caravan, moving on, moving on…”). A lacerating spurt through All About The Money sets people bobbing, scrambling and bouncing as well as a seven-and-a-half foot deck ceiling will allow. But as Paddy’s permanent goofy cartoon grin indicates, the St Silas brothers never take themselves too seriously. “It’s always about the money!” Michael protests, through a cheap megaphone. His voice suddenly jumps tracks from Louisiana bawl back through his London grit to an ‘EastEnders’ stage-Cockney. “You sla-a-a-g!”

Back upstairs, a dirty blonde in a cute plush cap is hammering a comradely nail into Mr Sheehy’s coffin. “Michael slags me off in his songs, and I slag him off in my songs,” explains Charlie Beddoes. Then she bowls us the rapaciously scornful putdowns of Vitriolic Alcoholic which kerb-kicks a snarling addict with a series of offhanded verbal wallops, culminating in “do I look like I give a toss? / It’s not my problem, not my loss.” It’s good to have friends.

The determined, diminutive Charlie is both the figurehead and the core of the shifting cult-of-personality that calls itself Charlie Says. Tonight, they’re three boot-babes and a moll-boy. Backed up by sidekick Ben Fisher’s car-crash guitar and by Lian and Kim Warmington’s ice-diva backing vocals and cool basilisk stares, Charlie plucks a remarkably articulate bass, sings like a breezeblock with lipstick and thuds out middle-weight girlpunk. Not short of charisma, Charlie holds the audience in the palm of her hand. The trouble is, she then rolls them around as if she doesn’t quite know what to do with them.

There’s a big difference between true punk and mere punk-ertainment, and Charlie Says wander a bit too close to the latter end of the scale. While Charlie’s former background in hip-hop art-rockers Rub Ultra is promising, discovering that both she and Ben are recent refugees from the touring band of tech-rocker Martin Grech pokes some suspicious holes in their lo-fi rebel stance. It just makes their music seem a little contrived. Not that the songs always help: It’s All About The Music is just another me-and-my guitar anthem, and Hey Leadfinger, Why You Gotta Keep Putting Me Down? is a foray into garage-blues which is far less interesting than its title is.

What pulls the band up out of fun-punk poseur-world are Charlie’s bright flickers of blunt humour and determination. The girlpower swagger of Venus Envy suddenly flings out “if the balls are in our court, then at least we have some,” while This Is Not My Story claims “whichever way it lands, my heart will keep on beating.” Little gems of lead-pipe wit and guts like this are what will make Charlie Says special; not desperate attempts to hitch onto whichever punk or garage soul flits past next. For the rest of the evening, I see Charlie perched here and there around the boat – beaming with life, always as if on the verge of delivering another breezy wisecrack. Let’s have more of that.

For all their efforts, Charlie Says don’t make me want to riot. Ghosting do… but I’d be rioting on their behalf. Five more minutes of hearing boozy party blabber drown out their beautiful, beautiful songs and I’d be flinging bottles around myself. Ghosting are heartbreakingly soft – as vulnerable and resilient as fresh grass bending underfoot. Unlike any other band this evening, they create little pockets of pure songcraft which you need to crane your head into to find out what’s going on.

Upfront, Dan Pierce picks out gentle acoustic guitar arpeggios which ride up into the atmosphere like thermals, and lets his voice follow suit. In the corner, wedged into a little cage of half-drumkit, laptop and miniature keyboard, George Moorey handles the rest. Intent and anxious-looking, he peers at his screen like a nervy microbiologist watching a virus proliferate. In fact, he’s just making sure that the sounds arrive on time – making tiny triggering adjustments to a mouse, reaching out one hand to roll off a gentle peal of Blue Nile piano, or swivelling to make precise soft taps on cymbal and snare with the single drumstick he holds in his other hand. It’s like watching someone play a one-man-band suit and conduct an orchestra at the same time. Yet even more impressive than this deft and diffident juggling act are the way Ghosting’s songs pool in the atmosphere – gradually, quietly filling up the space.

Dan’s big genial frame contains a songwriter’s spirit of rare and seductive delicacy. Faced with a chattering crowd, he simply shifts his guitar in his hands and sings soft, warm and open… and slowly the chatter drains away as the spell begins to work. Gently, Ghosting explore topics spanning all the way from frayed love songs (Your Love Don’t Make Sense) through thoughtful disillusion all the way to ending up being fingered as a murder suspect (Someone At The Door). Hopefully not as a natural progression – but if it was, you’d suspect that they’d’ve illustrated even that story with colossal and convincing sensitivity.

By the time Ghosting are midway through the exquisite, naked plea of I Want You To See Me, the crowd is hushed and half of them are hooked. Dan’s flexible and heartfelt singing – mostly a feather on tremulous breath, but rising to a swoony peak of intensity – sometimes recalls Mike Scott or Robert Forster at their very softest. In a fey, English, breathy way, he even has flashes of the fluttering abandonment of a Van Morrison or an Aaron Neville. Like them, he’s singing songs of real people grasping out at the intangible – unsure of what to believe on Anything That Might Be True, or “waiting for the one thing which really might have been some help,” on Good Year, only to wait in vain. Intangible desires, tangible heartaches. They’ll probably rise like damp rather than rockets, but I suspect that within a few years Ghosting will be very important to a lot of people.

Having put the whole cruise together in the first place, Earnest Cox get a well-deserved heroes’ welcome once they arrive onstage. They respond with perhaps their most energetic and assured set to date. It’s the third or fourth time I’ve caught the Cox, over a time when I’ve watched their sturdy intelligence getting to grips with lacing together their multiple influences. It’s taken a while for their mixture of old Memphis R’n’B, ’60s lad-rock, ’80s indie textures and prowling street poetry to gel.

Tonight it does with a vengeance. Hello Stranger sweeps out of the gate with a swagger of rogue testosterone coupled with a smart and beady eye, as Cox singer La Windo immediately takes on the audience with his particular blend of strut and twice-burned wariness. Perhaps it’s recent honeymoon rejuvenations or perhaps it’s the side effects of squabbling over their current recordings, but Earnest Cox are smouldering tonight. Still looking like a disparate houseful of mature students (the band’s a bewildering range of types from motherly to mysterious, from rogue to stockbroker) they continue to draw on what’s in them already rather than trying to squeeze themselves into an image.

The rhythm section used to be little more than agreeably white’n’slightly-funky: now it’s moving towards a lubricious slippery groove, with bass player/occasional MC Simon abandoning cheese and cheeriness to join drummer Shane in seriously flexing the pocket. Nicola parachutes in flights of piano, springs of Booker T. Hammond organ or splurges of synth when she needs to, while Marc buries himself in the middle of the band, cooking up lightly-textured mats of funky guitar texture to fly blurs across the gaps.

Up front, where you’d expect to find a preening Rod Stewart lookalike, La continues to prowl like a Gloucester merging of Shaun Ryder and Lou Reed, delivering his narratives of edgy small-town life like the most restless man in the pub and shaking his percussion as if testing the heft of a throwing knife. He looks pretty handy: yet the Cox don’t exactly trade on casual violence, even when La hurls out scathing fighting talk on You’re Not Fit To Lick (The Shit From My Shoes).

Rather, they seize on restlessness in general, whether it’s randiness, boredom, the unease as your parents age towards death, or the bumps in love’s road. There’s swagger, vengeance and one-upmanship aplenty in songs like Two Can Play At That Game, Baby and Scratching The Same Old Itch: yet in spite of this Earnest Cox’s songs are about survival if they’re about anything. No More Happy Endings treads the ashes of hopes and securities with the dogged, battered trudge of someone who’s had the knocks, has sagged, but won’t go down yet.

The Cox’s musical cockiness almost makes them part of that line of lad’s bands dipping in and out of pubs, taverns and speakeasys (and finally Royal Command performances). Yet the way the bruises on the songs never entirely fade (and the way that La quietly retreats into himself, gaze distracted, mid-song) hints at a band who’ve accepted, even embraced, the dragging baggage of personal history rather than saturating themselves in adolescent posing. Marc’s refusal to play the role of the strutting guitar stud (keeping his back almost entirely turned to La and the audience as he brews up his noises) confirms it and heightens the internal dignity beyond the Cox’s miscellaneous looks.

Perhaps it’s this mixture of getting by, getting on and getting on with it even within limited horizons that makes Earnest Cox local heroes on the Gloucester scene. The familiar tastes of that stew of pop ingredients they serve it up with, plus their band’s anti-glorious English universality and their bumpy everyman charisma should win them friends around the country, whether or not they bring their boat with them.

As the Cox set hits its climax, we look up and find ourselves back in the Gloucester lock. Hometime, Charlie.

As they totter and lurch through the four songs on their debut EP, Alex’s Hand are almost pure Halloween. It’s not just their affinity for macabre subjects, but their larger-than-life, cartoonish demeanour. They don’t just bring weird to the table – they slap it down on top, like an oversized pair of dirty boots, and then stare you out until you say something about it.

Underneath their gurning and silly pseudonyms there’s some fine musicianship – you’d expect no less from Seattle art-rockers who revere Zappa, The Melvins and The Residents. Yet the band’s prime fuel is atavistic spasms of prehistoric zombie jazz; trainwreck rock-and-roll; jarring faux-boondocks punk. They sound like a wrecked stovepipe hat, or an outgrown tuxedo with the elbows worn shiny: or like a quick rimshot played off the jutting, grimy wrist of a backwoods murderer. The tensions between their darkness, their outright goonery and their twists of clever, carny campery give them their particular flavour. Often, Alex’s Hand come across like a leering, anarchic ‘Muppet Show’ parody of Nick Cave: telling tales of blood and chaos, crawling on all fours, but winking hard as they do so.

As the band roll their parodic, chaotic, travelling-show style along, geek bones sometimes gleam through. On Laura (a spooky, corny ‘Twin Peaks’ tribute) they jog and jerk through a whistle-stop tour of the show’s soap-noir tropes (“stop-light flashing on and off – / ‘there’s a darkness in the woods!’ / A town with so many secrets – / what lies beyond?”). A double-jointed ‘South Park’ scratchalong full of silly voices and 1950s slapback, it chucks the lush narcotic memories of Angelo Badalamenti’s soundtracking unceremoniously out of the side door in favour of a more pointed strangeness. Feedback scrunches around the drum-clatter. Horn-playing guitarist Slurrp blurts out wrecked soul riffs with mottled old bloodstains dried onto the edges. Meanwhile, frontman Doctor Shark stumbles through the song like a disturbed conscience. When he isn’t looning along with the melodrama he’s pulling curtains off the rail, moaning with a barely-tranquillized despair as the tune plays tug-of-war between rock’n’roll perkiness and a wandering moping tonality (all lynchpinned by Slurrp’s startling, randomised guitar solo).

Similarly, the two-and-a-half crash-punk minutes of Robot ply a drunken line between cartwheel, pratfall and purposeful brain damage. Trapped in a tiny shack, the band charge their foreshortened Jesus Lizard riffs back and forth like sore-headed bears. Smacking into walls and roaring out resentful scatterbrained lyrics, they never get further than a ball of confusion. Eventually they crouch and sulk in the middle, smouldering like a burning trashcan and emitting a bastardized King Crimson growl of muttering bass and smeared, squealing guitar.

On the surface this is awkward lunkheadery, but the frustration and dismay is deliberate, self-inflicted – and clearly staged. Imagine an art-rock trio deliberately braining themselves with a tin tray to keep their audience happy. Whether this is all about avoiding straightforward expressiveness or whether Alex’s Hand are on some kind of echt-Brecht trip… that’s less clear. The theatricality certainly allows them to skim some pretty sordid areas, while hiding their sharper songwriting brains in their shoes.

With Stalker, Shark and co. rewrite a ugly tale of abduction and sex-murder as a lachrymose tragedy… but from the murderer’s corner. Drummer Tub skitters away on skeleton percussion; a campfire guitar limps through the chords. While his bass yawps away like cardboard thunder on a travelling-show wagon, Shark blurts out his words like a strangulated Nick Cave. The melody is sweet, lovelorn and memorable, but the jet-black humour is borderline repulsive – “stabbed alone in a room / Crying out, no-one hears you. / You look so lost and afeared – / to him, it’s been a really good year.” Yet a sombre, Lynchian aura of romance hangs over the song. During that moment before the horrible twist, everything seems so much more vivid and alive. “Exit the car, but you look back / and see those trees in the cul-de-sac, / and feel safe on those tracks – / but love has come for you…” The song doesn’t survive its own story either. Disturbing scraping noises and a brief twisted guest guitar solo (from Step Daddy’s Ben Reece) build to a sudden crushing derailment as the dream of love and death violently collapses.

Jaunty and gloomy, Reception picks over homelier horrors – a mire of despondency and addictions – but with Steve Barnes’s beautiful ripples of piano and organ soothing the murk, it’s also the band’s finest hour. With its spectrally pulsing bass and its nighthawk atmosphere, the song comes across like a wrecked and blasted take on Morphine. “Hauling yourself from the reception, / blame it all on depression,” moans Shark, still mooching around mournfully in a shabby coat with his hair in a Robert Smith tousle, clutching a suspicious bottle. “Carted off and then forgotten. / The others refuse that we have a problem. / Drink up – / drugs, self medicate…/ small twist of fate.” A superbly mock-melodramatic, fall-down-drunk guitar solo follows, as if someone had slurred out its name. This is one of those songs that realise that defeat doesn’t usually just drop to rock-bottom and fizzle out, but bumps along on a plateau halfway there, fuelled mostly by bathos. “Like a snail trying to build a home, / the roots don’t last and they end up all alone…” There’s more to Alex’s Hand than big boots, geek jokes and horse-laughs.